Hello,
I have checked onto your site and found that you have used 3rd party plugins to heavily customize the wplms templates. this extra CSS is conflicting with the original wplms styling.
refer:
http://prntscr.com/p9p0we
this is the plugin.
right now you are using generic header style. you could try our transparent header style from
wp-admin >> appearance >> customize >> header >> header style.
if it does not let you to achieve the desired output then let me know. i will provide extra css to lower down the page title from the top.